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conquest of Vauban

...forces of the Netherlands, England, the Holy Roman Empire, and their lesser allies, Vauban was promoted to lieutenant general; and in October, under the command of the dauphin Louis, he took
Philippsburg, on the right bank of the Rhine south of Speyer. At this siege he introduced ricochet gunfire, whereby a cannonball was made to bounce forward over parapets and to hit several objectives...